IUH-F117-V1-*
Operation
20
13
-0
4
33
When using this command, make sure that the protocol control word contains the
correct length of the following UII/EPC. If this is not executed correctly, the
complete data is not output on the subsequent read operation because the
command SS uses the length in the protocol control word for the output.
In accordance with EPC Gen 2 (ISO/IEC 18000-63), the protocol control word
consists of two bytes. The five highest value bits denote the length of the
<UII/EPC> in words (= 16 bit):
The meaning of the remaining bits is described in EPC Gen 2 (ISO/IEC 18000-63).
If a UII/EPC has the length 12 bytes, i.e., 6 words (00110
bin
), and all other bits are
equal to 0, the protocol control word corresponds to 00110000 00000000
bin
or
3000
hex
. If some of the other bits are not equal to 0, this produces a different
protocol control word.
Enhanced Write Special Read-Only Code EP
This command continuously attempts to write a <Length> byte long UII/EPC code
to tags according to EPC Gen 2 (ISO/IEC 18000-63). If the command was
executed successfully, a status 0 is reported to the control interface. If there is no
tag in the measurement range, or if the tag leaves the measurement range, a
status 5 is reported to the control interface.
Example:
EP1E.30.00.E2.00.90.51.33.02.00.92.18.20.56.12 continuously writes the value
".30.00" for <PC>, and the UII/EPC code ".E2.00.90.51.33.02.00.92.18.20.56.12"
with a length of 2 + 12 bytes = 14 bytes to IDENT
Control
channel 1.
See "Single Write Special Read-Only Code SP" on page 32
Single Read Words SR
One attempt is made to read <WordNum> 32-bit words from address
<WordAddr>.
00000
bin
No word
0 bits
00001
bin
One word
16 bits
00010
bin
Two words
32 bits
...
...
...
11111
bin
31 words
496 bits
Command: EP <ChanNo> <Length> <SpecialFixcode> <CHCK> <ETX>
Response:
<Status> <ChanNo> <CHCK> <ETX>
Command: SR <ChanNo> <WordAddr> <WordNum> <CHCK> <ETX>
Response:
<Status> <ChanNo> <Data> <CHCK> <ETX>
